When I saw that I had a comment from you on this deck, I was guessing that's what it was. :)

I don't usually like running 4 burning wishes maindeck, as your hand sometimes gets clogged up with either multiple wishes, or an unneeded wish and a doomsday.  I was running 4 in the UBRg version because that is more tuned for a discard meta - having the 4th Burning Wish maindeck there makes sense as you want a higher concentration of business.

If I were to play this version now (and I'm considering it because BUG decks seem to be cutting discard for counterspells, and even switching to stifle), I would do so because there is less discard in general, and more tempo decks, more stifles, and more surgical extractions. However, I'm not convinced that discard is fully "gone" from the meta yet, as people will probably be playing some older lists - and in those matchups I would board in the 4th Wish over Chant, likely. Additionally, if there is a matchup where Wish targets are key for stopping my opponent's game plan (Elves, Death and Taxes, Deadguy, others?) I would side it in as another piece of anti-hate replacing whatever made sense in that particular matchup.